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Merge pull request #4844 from PySimpleGUI/Dev-latest

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New Demo showing how to make a fixed size column that can have the in…
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PySimpleGUI 2021-10-20 14:02:13 -04:00 • committed by GitHub
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DemoPrograms/Demo_Column_Fixed_Size_Justified_Elements.py Normal file
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import PySimpleGUI as sg
"""
Columns with a hard coded size that can have elements justified within it.
The Column element can have the size set to a fixed size, but when doing so, PySimpleGUI has
a limitation that the contents can't be justified using the normal element_justification parameter.
What to do?
The Sizer Element to the rescue.
PySimpleGUI likes to have layouts that size themselves rather than hard coded using a size parameter. The
Sizer Element enables you to create columns with fixed size by making the contents of your column a fixed size.
It is an invisible "padding" type of element. It has a width and a height parameter.
Copyright 2021 PySimpleGUI
"""
'''
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'''
# Let's say this is your layout and you want to center it in a 500 x 300 pixel Column Element.
col_interior = [[sg.Text('My Window')],
[sg.In()],
[sg.In()],
[sg.Button('Go'), sg.Button('Exit'), sg.Cancel(), sg.Ok()]]
# Intuition would be to write it as this:
layout = [[sg.Text('This layout is broken. The size of the Column is correct, but the elements are not justified')],
[sg.Column(col_interior, element_justification='c', size=(500, 300), background_color='red')]]
# But when you run it, you'll see that your interior is not centered.
window = sg.Window('Window Title', layout)
window.read(close=True)
'''
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'''
def ColumnFixedSize(layout, size=(None, None), *args, **kwargs):
# An addition column is needed to wrap the column with the Sizers because the colors will not be set on the space the sizers take
return sg.Column([[sg.Column([[sg.Sizer(0,size[1]-1), sg.Column([[sg.Sizer(size[0]-2,0)]] + layout, *args, **kwargs, pad=(0,0))]], *args, **kwargs)]],pad=(0,0))
col_interior = [[sg.Text('My Window')],
[sg.In()],
[sg.In()],
[sg.Button('Go'), sg.Button('Exit'), sg.Cancel(), sg.Ok()]]
layout = [[sg.Text('Below is a column that is 500 x 300')],
[sg.Text('With the interior centered')],
[ColumnFixedSize(col_interior, size=(500, 300), background_color='red', element_justification='c', vertical_alignment='t')]]
window = sg.Window('Window Title', layout)
window.read(close=True)